How do you evaluate $Arcsin(3/4)$ ?

Question

21078 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-07-04T23:42:26

Find $arcsin (3/4)$

$sin x = 3/4 = 0.75$ . Calculator give -> arc $x = 48.59$ deg

Trig unit circle gives another arc x that has the same sin value:

x = 180 - 48.59 = $131.41$ deg

How do you evaluate Arcsin(3/4)Arcsin(3/4)?